Beacon light is a type of traffic lights installed in some beacon that ensure the safe navigation of ships and airplanes. They emit lights with particular colors and frequencies during the night, achieving particular irradiation angles and visual distances. Beacon light can be dived as fixed beacon, buoy, light boat and light house. Fixed beacons, buoys, light boats are usually used as navigation indicators or warming signals. Light houses issued identifiable signals day and night, helping ships to commit position measurements or also proving hazard warning information for ships.
LED beacon light is a new application in the market, which has been greatly promoted and received a lot of attentions from maritime sectors. Choosing right LED beacon light and currently using it is rather important. Expect for planar LED light source directly used in guide beacons, bridge beacons and rotating lights, most of LED beacons are round applications. Currently, beacon manufacturers all over the world used mainly use two parameters to identify performances of LED beacon lamps: light intensity of emergent surface and vertical divergence angle.
Used as light sources, LED components normally have certain beam angles, ensuring the initial light intensity within a given viewing angle. The light intensity – viewing angle characteristic curves indicates that LED components are single directional rather than full angle range spot light sources. Therefore LED beacon light must use special lens.
For LED round beacons, LED is a special light source. G24 LED chip is equipped with a small optical lens. The general purpose of this lens is concentrating light emitted by spot LED light source into a beam with a certain solid angle. Suppose a LED component with a solid angle of 30°, most of the light will be concentrated within this angle. The light intensity will be rapidly reduced outside this range. LED round beacons are a type of beacon lamps that evenly arrange LED components (with a certain solid angles) on the circumference with a certain diameter. If saying that this circumference (fully filled with LED components) is called light-emitting circumference, the Philippines Cornell Lens typically designed for LED round beacons will concentrate the light emit by the light-emitting circumference. Here LED chips are no longer LED sources.